Component of planet initialization on the map (#26510)

* no cl no fun

* DevPlanet

* fix europa?

* Update Content.Server/Station/Components/StationBiomeComponent.cs

* Update Content.Server/Station/Components/StationBiomeComponent.cs

---------

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/Station/Components/StationBiomeComponent.cs

@@ -0,0 +1,19 @@
+using Content.Server.Station.Systems;
+using Content.Shared.Parallax.Biomes;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Station.Components;
+
+/// <summary>
+/// Runs EnsurePlanet against the largest grid on Mapinit.
+/// </summary>
+[RegisterComponent, Access(typeof(StationBiomeSystem))]
+public sealed partial class StationBiomeComponent : Component
+{
+    [DataField(required: true)]
+    public ProtoId<BiomeTemplatePrototype> Biome = "Grasslands";
+
+    // If null, its random
+    [DataField]
+    public int? Seed = null;
+}